Investments in Unconsolidated Entities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
(Loss) income from unconsolidated entities	$ (12,648,000)	$ (5,556,000)
Investments in unconsolidated entities	715,468,000		744,151,000
Unamortized Investment In Joint Venture Primarily Attributable To Real Estate And Related Intangible Assets	166,699,000,000
Triple Net [Member]
Schedule of Equity Method Investments [Line Items]
(Loss) income from unconsolidated entities	1,393,000	1,382,000
Senior housing - operating [Member]
Schedule of Equity Method Investments [Line Items]
(Loss) income from unconsolidated entities	(15,073,000)	(7,961,000)
Outpatient Medical [Member]
Schedule of Equity Method Investments [Line Items]
(Loss) income from unconsolidated entities	$ 1,032,000	$ 1,023,000